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  1. Lucene - Core
  2. LUCENE-3924

Optimize buffer size handling in RAMDirectory to make it more GC friendly

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 4.0-ALPHA
    • Fix Version/s: 4.9, 6.0
    • Component/s: core/store
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      RAMDirectory currently uses a fixed buffer size of 1024 bytes to allocate memory. This is very wasteful for large indexes. Improvements may be:

      • per file buffer sizes based on IOContext and maximum segment size
      • allocate only one buffer for files that are copied from another directory
      • dynamically increae buffer size when files grow (makes seek() complicated)

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            • Assignee:
              thetaphi Uwe Schindler
              Reporter:
              thetaphi Uwe Schindler
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              Dates

              • Created:
                Updated: